| 摘要 |
PROBLEM TO BE SOLVED: To perform flexible voice quality conversion in good sound quality and to intuitively adjust voice quality conversion. SOLUTION: In a voice quality converter, deformation is added in accordance with voice quality conversion control part 103 to a sound feature parameter string 100 as a result of analyzing voice based on a voice conversion parameter data base 105, and when at least one of feature variables by which the sound parameter string 100 or feature variables calculated from the sound feature parameter exceeds a predetermined threshold value 106, it is judged that voice quality is deteriorated as a result of voice quality conversion, and a content of voice quality conversion processing is adjusted so that quality deterioration may not arise. COPYRIGHT: (C)2007,JPO&INPIT
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